Pith Number

pith:H3WBHUMV

pith:2011:H3WBHUMVRXUIR2BPRK7PZ5E2L4

not attested not anchored not stored refs pending

Distinctive rings in the 21 cm signal of the epoch of reionization

B. Semelin, P. Vonlanthen, S. Baek, Y. Revaz

arxiv:1103.0439 v2 · 2011-03-02 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H3WBHUMVRXUIR2BPRK7PZ5E2L4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:03:01.024576Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3eec13d1958de888e82f8abefcf49a5f006443373ed276036afbda6076cb5313

Aliases

arxiv: 1103.0439 · arxiv_version: 1103.0439v2 · doi: 10.48550/arxiv.1103.0439 · pith_short_12: H3WBHUMVRXUI · pith_short_16: H3WBHUMVRXUIR2BP · pith_short_8: H3WBHUMV

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/H3WBHUMVRXUIR2BPRK7PZ5E2L4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3eec13d1958de888e82f8abefcf49a5f006443373ed276036afbda6076cb5313

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "577825682eff5c7a96f6c7262fd3aea997f7de00633a6a6766fdf75fe6896234",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-02T14:28:43Z",
    "title_canon_sha256": "4cf15fed8dcc445c6b93d5a64e2733db3b811d4e2d385b1d9e7bb398f118be0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.0439",
    "kind": "arxiv",
    "version": 2
  }
}